Long-Term Effects of Brood Size Manipulation on Morphological Development and Sex-Specific Mortality of Offspring

10.2307/6019 ◽  
1997 ◽  
Vol 66 (2) ◽  
pp. 167 ◽  
Author(s):  
C.H. De Kogel
Keyword(s):  
Brood Size ◽  
Morphological Development ◽  
Long Term Effects ◽  
Brood Size Manipulation ◽  
Specific Mortality

Does Brood Size Manipulation Affect Later Competitive Behaviour of Offspring?

Behaviour ◽  
1997 ◽  
Vol 134 (3-4) ◽  
pp. 161-172 ◽  
Author(s):  
C.H. De Kogel
Keyword(s):  
Brood Size ◽  
Competitive Ability ◽  
Field Experiments ◽  
Food Competition ◽  
The Other ◽  
Long Term Effects ◽  
Significant Difference ◽  
Competitive Behaviour

AbstractData from several field experiments support the existence of a trade-off between number and quality of offspring. However, long term effects of brood size on fitness related traits of offspring have been a relatively neglected area of research. In a laboratory experiment the effect of manipulated brood size on subsequent competitive ability of adult offspring was investigated. Zebra finches, Taeniopygia guttata, were reared in small or large broods and young were exchanged in such a way that natural siblings from different rearing conditions could be compared. Competitive behaviour was assessed in two different contexts: competition for food (both sexes tested) and competition for mates (only males tested). There was no significant difference between males from small and large broods in number of succesfull attacks (after which the other male moved away) during male-male aggressive interactions provoked by the presentation of a female in an adjacent cage. Nor did brood size affect latency to eat, time spent eating or success at displacing the other bird from the feeder during food competition tests. The results thus suggest consistently that later competitive ability of offspring is not affected by brood size in this species.

Abstract 12676: Regular Intake of Pepper Decreases Cardiovascular Mortality: A Meta-Analysis

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Sunil Upadhaya ◽  
Seetharamprasad Madala ◽  
Kanchan Tiwari
Keyword(s):  
Cardiovascular Mortality ◽  
Meta Analysis ◽  
P Value ◽  
Long Term Effects ◽  
Electronic Search ◽  
All Cause Mortality ◽  
Specific Mortality ◽  
Regular Intake ◽  
Related Mortality

Introduction: Cardiovascular disease is one of the leading causes of morbidity and mortality. Spice consumption has been shown to be beneficial on lipid and fasting glucose profile. However, there is no clear evidence regarding long-term effects of spice consumption. Methods: Systematic electronic search of PubMed and EMBASE databases was performed for studies, both randomized and non-randomized, that studied association of pepper consumption with total and cause-specific mortality. A random-effects model was used to calculate hazard ratio (HR). Results: Our search identified 4 observational studies (259,184 participants in regular pepper consumption group and 305,563 participants in low or no pepper consumption group). Regular pepper consumption was associated with significant reduction in all-cause mortality (HR: 0.87 [0.84-0.91], I 2 = 25%, p value <0.00001) (Figure 1). In addition, pepper consumption was associated with significant reduction in cardiovascular mortality (HR 0.84 [0.77-0.91], I 2 = 66 %, p value < 0.0001) (Figure 2), mortality related to ischemic heart disease (HR: 0.76 [0.66 -0.87], I 2 = 0%, p value = 0.0001) and cancer (HR: 0.91 [ 0.85-0.97], I 2 = 0%, p value = 0.003). However, stroke related mortality was similar in both groups (HR: 0.78 [0.56-1.10], I 2 = 61%, p value = 0.15). Conclusions: This study showed that regular intake of pepper significantly decreases rates of all-cause, cancer-related and cardiovascular mortality.

scholarly journals Long-term effects of manipulated natal brood size on metabolic rate in zebra finches

2006 ◽  
Vol 2 (3) ◽  
pp. 478-480 ◽  
Author(s):  
Simon Verhulst ◽  
Marie-Jeanne Holveck ◽  
Katharina Riebel
Keyword(s):  
Metabolic Rate ◽  
Brood Size ◽  
Standard Metabolic Rate ◽  
Metabolic Efficiency ◽  
Zebra Finches ◽  
Long Term Effects ◽  
Fitness Consequences ◽  
Rearing Conditions ◽  
Large Brood

Long-term effects of developmental conditions on health, longevity and other fitness components in humans are drawing increasing attention. In evolutionary ecology, such effects are of similar importance because of their role in the trade-off between quantity and quality of offspring. The central role of energy consumption is well documented for some long-term health effects in humans (e.g. obesity), but little is known of the long-term effects of rearing conditions on energy requirements later in life. We manipulated the rearing conditions in zebra finches ( Taeniopygia guttata ) using brood size manipulation and cross-fostering. It has previously been shown in this species that being reared in a large brood has negative fitness consequences, and that such effects are stronger in daughters than in sons. We show that, independent of mass, standard metabolic rate of 1-year-old birds was higher when they had been reared in a large brood, and this is to our knowledge the first demonstration of such an effect. Furthermore, the brood size effect was stronger in daughters than in sons. This suggests that metabolic efficiency may play a role in mediating the long-term fitness consequences of rearing conditions.

scholarly journals Long term effects of residential NOx exposure on total and cause-specific mortality and incidence of myocardial infarction in a Swedish cohort

2015 ◽  
Vol 142 ◽  
pp. 197-206 ◽  
Author(s):  
Leo Stockfelt ◽  
Eva M. Andersson ◽  
Peter Molnár ◽  
Annika Rosengren ◽  
Lars Wilhelmsen ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Long Term Effects ◽  
Specific Mortality ◽  
Swedish Cohort

Ovarian Dysfunction in Fetally Irradiated Beagles

1977 ◽  
Vol 35 ◽  
pp. 658-659
Author(s):  
T. M. Seed ◽  
M. H. Sanderson ◽  
D. L. Gutzeit ◽  
T. E. Fritz ◽  
D. V. Tolle ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Low Dose ◽  
Long Term Effects ◽  
Ovarian Dysfunction ◽  
Dose Rates ◽  
Highly Sensitive ◽  
Microscopic Evaluation ◽  
Ovarian Pathology ◽  
Normal Offspring

The developing mammalian fetus is thought to be highly sensitive to ionizing radiation. However, dose, dose-rate relationships are not well established, especially the long term effects of protracted, low-dose exposure. A previous report (1) has indicated that bred beagle bitches exposed to daily doses of 5 to 35 R 60Co gamma rays throughout gestation can produce viable, seemingly normal offspring. Puppies irradiated in utero are distinguishable from controls only by their smaller size, dental abnormalities, and, in adulthood, by their inability to bear young.We report here our preliminary microscopic evaluation of ovarian pathology in young pups continuously irradiated throughout gestation at daily (22 h/day) dose rates of either 0.4, 1.0, 2.5, or 5.0 R/day of gamma rays from an attenuated 60Co source. Pups from non-irradiated bitches served as controls. Experimental animals were evaluated clinically and hematologically (control + 5.0 R/day pups) at regular intervals.

Ultrastructural investigations of MDL 19,660-induced effects on the canine platelet and megakaryocyte

1990 ◽  
Vol 48 (3) ◽  
pp. 374-375
Author(s):  
D.E. Loudy ◽  
J. Sprinkle-Cavallo ◽  
J.T. Yarrington ◽  
F.Y. Thompson ◽  
J.P. Gibson
Keyword(s):  
Antidepressant Drug ◽  
Beagle Dogs ◽  
Long Term Effects ◽  
Short Term ◽  
Platelet Counts ◽  
Toxicological Studies ◽  
Induced Aggregation ◽  
Internal Architecture

Previous short term toxicological studies of one to two weeks duration have demonstrated that MDL 19,660 (5-(4-chlorophenyl)-2,4-dihydro-2,4-dimethyl-3Hl, 2,4-triazole-3-thione), an antidepressant drug, causes a dose-related thrombocytopenia in dogs. Platelet counts started to decline after two days of dosing with 30 mg/kg/day and continued to decrease to their lowest levels by 5-7 days. The loss in platelets was primarily of the small discoid subpopulation. In vitro studies have also indicated that MDL 19,660: does not spontaneously aggregate canine platelets and has moderate antiaggregating properties by inhibiting ADP-induced aggregation. The objectives of the present investigation of MDL 19,660 were to evaluate ultrastructurally long term effects on platelet internal architecture and changes in subpopulations of platelets and megakaryocytes.Nine male and nine female beagle dogs were divided equally into three groups and were administered orally 0, 15, or 30 mg/kg/day of MDL 19,660 for three months. Compared to a control platelet range of 353,000- 452,000/μl, a doserelated thrombocytopenia reached a maximum severity of an average of 135,000/μl for the 15 mg/kg/day dogs after two weeks and 81,000/μl for the 30 mg/kg/day dogs after one week.

Long-Term Effects of Head Lice Tx Unknown

2012 ◽  
Vol 43 (3) ◽  
pp. 42
Author(s):  
MITCHEL L. ZOLER
Keyword(s):  
Head Lice ◽  
Long Term Effects

The response of skin perfusion and of rheological and immunological variables to intravenous prostanoid administration in Raynaud’s phenomenon secondary to collagenosis

VASA ◽  
2005 ◽  
Vol 34 (4) ◽  
pp. 243-249 ◽  
Author(s):  
Drinda ◽  
Neumann ◽  
Pöhlmann ◽  
Vogelsang ◽  
Stein ◽  
...  
Keyword(s):  
Laser Doppler Flowmetry ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Plasma Viscosity ◽  
Laser Doppler ◽  
Erythrocyte Aggregation ◽  
Control Group ◽  
Long Term Effects ◽  
Doppler Flowmetry

Background: Prostanoids are used in the treatment of Raynaud’s phenomenon and acral perfusion disorders secondary to collagenosis. In subjective terms, intravenous administration of these agents produces success in more than 50% of patients. The therapeutic outcome of clinical administration of alprostadil or iloprost may vary from individual to individual. Patients and methods: The following variables were analysed in a cross-over study in 27 patients with collagenosis and Raynaud’s phenomenon: plasma viscosity and erythrocyte aggregation (rheological variables), partial pressure of oxygen and laser Doppler flowmetry in the finger region, and lymphocyte phenotyping and interleukin (IL) determinations (immunological variables). Results: Laser Doppler flowmetry revealed significant differences between patients with secondary Raynaud’s phenomenon and a control group of 25 healthy subjects. Laser Doppler readings did not change significantly as a result of the treatments. Therapy with iloprost produced a reduction in IL-1beta, L-selectin (CD 62 L) and IL-6. Conclusion: The change in immunological variables due to iloprost may explain the long-term effects of prostaglandins in the treatment of Raynaud’s phenomenon. From our results it is not possible to infer any preference for iloprost or alprostadil.

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